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The hydrothermal phase transition of ammonium titanate into TiO 2 in aqueous ammonia media was investigated in the presence of F − ions by adding various kinds of electrolytes such as NaCl, NH 4 Cl, NaF, and NH 4 F. The phase composition and the morphologies of the products were examined by X-ray diffraction (XRD) and scanning electron microscopy (SEM). With the assistance...
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